Towards a better tinyhouse

I just came across this accidentally, a way to grow food year round in a northerly climate without any heating, relatively inexpensively :

http://www.tdc.ca/bubblegreenhouse.htm

For living off the grid in a cold climate, this looks very interesting to grow your own food. I was trying, incidentally, to find out the price of greenhouse plastic for use with the gellified water idea… gellified water might be another option, but disappointingly I’m finding it might not be that practical because of the sheer weight of it.

BTW, if you want to read more in the vein of growing food all year in a relatively small area, nasa has this thing called CELSS, Controlled ecological life support system, which is really interesting reading.